Guwahati, May 21 At least 11 persons, including Arunachal Pradesh legislator Tirong Aboh, were killed in an ambush by suspected Naga militants in Tirap district of Arunachal Pradesh on Tuesday, police said. Police said that Aboh and his family members were travelling from Dibrugarh in Assam to Khonsa, when their vehicle was ambushed by suspected NSCN militants at Bogapani in …